Reconstruction of HI power spectra with radio-interferometers to study dark energy

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dc.creatorAnsari, R.
dc.creatorGoff, J. -M. Le
dc.creatorMagneville, Ch.
dc.creatorMoniez, M.
dc.creatorPalanque-Delabrouille, N.
dc.creatorRich, J.
dc.creatorRuhlmann-Kleider, V.
dc.creatorYèche, Ch.
dc.date2008-07-23
dc.date.accessioned2026-07-07T09:52:20Z
dc.date.available2026-07-07T09:52:20Z
dc.descriptionAmong the tools available for the study of the dark energy driving the expansion of the Universe, Baryon Acoustic Oscillations (BAO) and their effects on the matter power spectrum are particularly attractive. It was recently proposed to study these oscillations by mapping the 21cm emission of the neutral hydrogen in the redshift range $0.5<z<3$. We discuss here the precision of such measurements using radio-interferometers consisting of arrays of dishes or north-south oriented cylinders. We then discuss the resulting uncertainties on the BAO scales and the sensitivity to the parameters of the Dark Energy equation of state.
dc.identifierhttps://arxiv.org/abs/0807.3614
dc.identifierhttp://arxiv.org/abs/0807.3614
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165560
dc.subjectAstrophysics
dc.titleReconstruction of HI power spectra with radio-interferometers to study dark energy
dc.typetext

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